Find an equation of the tangent line at the indicated point on the graph of the function.
-$$y = f ( x ) = 8 \sqrt { x } - x + 7 , ( x , y ) = ( 64,7 )$$
A) $y = 7$
B) $y = - \frac { 1 } { 2 } x + 7$
C) $y = \frac { 1 } { 2 } x - 39$
D) $y = - \frac { 1 } { 2 } x + 39$

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The Answer of Find an equation of the tangent line at the indicated point on the graph of the function.
-$$y = f ( x ) = 8 \sqrt { x } - x + 7 , ( x , y ) = ( 64,7 )$$
A) $y = 7$
B) $y = - \frac { 1 } { 2 } x + 7$
C) $y = \frac { 1 } { 2 } x - 39$
D) $y = - \frac { 1 } { 2 } x + 39$

Find an Equation of the Tangent Line at the Indicated y=f(x)=8x−x+7,(x,y)=(64,7)y = f ( x ) = 8 \sqrt { x } - x + 7 , ( x , y ) = ( 64,7 )y=f(x)=8x​−x+7,(x,y)=(64,7)

Find an Equation of the Tangent Line at the Indicated $y = f ( x ) = 8 \sqrt { x } - x + 7 , ( x , y ) = ( 64,7 )$